California's Air Resources Board says diesel fumes from trucks, boats and lifting equipment at the ever-expanding Ports of Los Angeles and Long Beach are killing almost 2400 people a year. Today the ports announced a joint five-year plan to bring cancer risks to "acceptable levels." Mayor Villaraigosa's Harbor Commission Chair told the San Francisco Chronicle the plan involves "radical new environmental policies that could change the way America's ports operate." Environmentalists and community groups want to know what that means, how it will be accomplished and how soon. Will the shipping industry go along without a fight? We go to journalists, shippers, environmentalists and the Harbor Commission for answers.